Abstract

The occurrence of equilibrium magnetic configurations in ferromagnetic low-symmetry nanoparticles has been investigated. T-shaped nanoparticles, which present strong configurational anisotropy, have been considered. It has been found that such particles exhibit four equilibrium magnetic states, whose stability at room temperature was estimated. The presence of structural imperfections, such as surface roughness, in those systems was also considered, resulting in no significant effects on the magnetic behavior of the particles. The present results are expected to be of relevance to magnetic storage.

We acknowledge financial support in Chile from FONDECYT 1120356 and 11121214, Grant ICM P10-061-F by FIC-MINECON, Financiamiento Basal para Centros Científicos y Tecnológicos de Excelencia FB 0807, AFOSR Grant FA9550-11-1-0347, and CONICYT for Ph.D. fellowships and Concurso Inserción en la Academia-Folio 791220017. We also acknowledge the support from FAPERJ and CNPq of Brazil.

[Magnets or magnetic bodies characterised by the
magnetic materials therefor; Selection of materials for their magnetic
properties, Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties]